Patent US4579110A successfully refreshed from Google Patents.
US4579110A
Expired / Lapsed
US
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Tubular pessary as a contraceptive means
Assignee: Individual
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Filing: 1983-11-18
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Granted: 1986-04-01
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Expires: 2003-11-18
Abstract
Abstract The invention relates to a tubular pessary having a contraceptive action through the obturation of the proximal uterine tube in non-surgical manner by hysteroscopy and which can easily be worn on either side. The tubular pessary has a cylindrical, sensitive central part permitting the obturation of the uterine tube. It has a distal elastic loop, which prevents sliding back into the uterus of the device. It has a proximal elastic loop, which prevents migration of the device into the abdominal cavity and which can easily be removed through a hysteroscope. The object of the invention is to overcome the inadequacies of the known contraceptive means.
Inventors
- 👤 Jacques Hamou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:21
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/20; A61F6/22; A61F6/225
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
A tubular pessary for reversible contraception by obturating the isthmian channel, wherein the device has a cylindrical central part made from medically inactive material, with a cross-section that forms a fluid-sealing fit with the wall of a fallopian tube said central part having a distal end and a proximal and, end outwardly springing and spreading attachments at each of said ends adapted to be compressed to fit into a hysteroscope, and to spring out to a radial distance greater than the radius of the central part, at least the attachment at said distal end being adapted to make contact with the said wall and resist removal of said pessary by peristaltic action.
Claim 2
Dependent Claim
112 words
A tubular pessary for reversible contraception by obturating the isthmian channel, wherein the device has a cylindrical central part made from medically inactive material, with a cross-section that forms a fluid-sealing fit with the wall of a fallopian tube said central part having a distal end and a proximal and, end outwardly springing and spreading attachments at each of said ends adapted to be compressed to fit into a hysteroscope, and to spring out to a radial distance greater than the radius of the central part, at least the attachment at said distal end being adapted to make contact with the said wall and resist removal of said pessary by peristaltic action.
Claim 3
Dependent Claim
17 words
A tubular pessary according to claim 1, wherein both attachments are constructed as an outwardly springing loop.
Claim 4
Dependent Claim
27 words
A tubular pessary according to claim 1, wherein the central part has a length of 0.5 to 1.5 cm and a diameter of 1 to 2 mm.
Claim 5
Dependent Claim
27 words
A tubular pessary according to claim 2, wherein the distal attachments form a loop which is approximately oval and has a diameter of 3 to 6 mm.
Claim 6
Dependent Claim
37 words
A tubular pessary according to claim 1, wherein the attachments at the distal end are filamentary and have a filament diameter which is no more than about half as large as the diameter of the central part.
Claim 7
Dependent Claim
19 words
A tubular pessary according to claim 1, wherein the distal end of the central part is soft or rounded.
Claim 8
Dependent Claim
30 words
A tubular pessary according to claim 1, wherein the proximal end of the central part has a diameter which is larger than that of the remainder of the central part.
Claim 9
Dependent Claim
31 words
A tubular pessary according to claim 1, wherein the proximal end of the central part has a blind channel for the insertion of a metallic, flexible guide wire for anchoring purposes.
Claim 10
Dependent Claim
31 words
A tubular pessary according to claim 1, wherein the attachments are constructed as one or more threads, which form an acute angle to the central part, facing toward said proximal end.
Claim 11
Dependent Claim
20 words
A tubular pessary according to claim 1, wherein the attachments at the proximal end are constructed as outwardly springing parts.
Claim 12
Dependent Claim
16 words
A tubular pessary according to claim 1, wherein the device includes a material which is radiopaque.
Claim 13
Dependent Claim
23 words
A tubular pessary according to claim 1, wherein the device is provided with a chemical, metallic or an alloyed medium, which is inert.
Claim 14
Dependent Claim
20 words
A tubular pessary according to claim 1, wherein the distal end of the device is constructed as a filamentary barb.
Claim 15
Dependent Claim
57 words
A method for using the tubular pessary according to claim 1, wherein the pessary, when placed in a channel of a hysteroscope is moved towards the distal end and out of the latter by means of a metal or plastic wire which forms part of the hysteroscope, and which fits into the proximal end of said pessary.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |